Dynamic liquid film nanochannels for adjustable ion and molecule transport  

作　　者：Chunxiao Liang Dianyu Wang Zhe Xu Haitao Deng Fan Xia Ye Tian 

机构地区：[1]Key Laboratory of Bioinspired Materials and Interfacial Science,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China [4]State Key Laboratory of Biogeology and Environmental Geology,Engineering Research Center of Nano-Geomaterials of Ministry of Education,Faculty of Materials Science and Chemistry,China University of Geosciences,Wuhan 430074,China [5]Suzhou Institute for Advanced Research,University of Science and Technology of China,Suzhou 215123,China [6]Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao 266101,China

出　　处：《Nano Research》2025年第3期494-501,共8页纳米研究(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.22090052);Frontier Science Key Projects of CAS(No.ZDBS-LY-SLH022);Key R&D Project of Shandong Province(No.2022CXGC010302);Xiaomi Young Talents Program.

摘　　要：Gating,a fundamental feature of biological nanochannels,enables the intelligent regulation of ion and molecule transport in response to specific requirements.Inspired by nature,numerous artificial gating systems have been researched through the functionalization of solid-state nanochannels.However,these gating systems typically allow only two transitions:“open”and“closed”,which makes it challenging to achieve multi-state transport.Herein,we construct dynamic liquid film nanochannels(DLFNs)by inserting an oil droplet into a capillary with gradient wettability that is filled with ionic solutions.The liquid film,formed between the oil and the capillary,functions as a nanochannel for ion and molecule transport,with its height dynamically adjusted through the capillary's gradient wettability.At a deeper level,the variations in liquid film thickness are driven by the interfacial water structure,which is mediated by hydrogen bonding interactions.Furthermore,unlike traditional solid-state nanochannels,which involve two phases(liquid/solid),the properties of DLFNs are influenced by three phases(oil/water/solid),resulting in distinct performance characteristics,such as reconfigurability,low cost,and ease of fabrication.This work provides an avenue for designing dynamic nanofluids and may spark promising applications of DLFNs with multiscale gating properties in drug delivery,microreactors,sieving,biosensing,and other related fields.

关 键 词：dynamic liquid film NANOCHANNEL GATING WETTABILITY oil-water-solid interface 

分 类 号：F42[经济管理—产业经济]